I've lost track of when and where this was published, but the joke was a well-traveled one. The hobo pie is a Michigan delicacy: You take two pieces of the worst white bread available, fill them with something tasty and meltable, slap them in a hinged iron on a handle
, and stick the business end of the apparatus into a campfire. You can make them sweet or savory according to your druthers. Best one I ever had contained orchard-fresh green apple, brie and brown sugar. I would have made for one posh hobo.